<?php
/**
 * CJuiDatePicker class file.
 *
 * @author Sebastian Thierer <sebathi@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright Copyright &copy; 2008-2011 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

Yii::import('zii.widgets.jui.CJuiInputWidget');

/**
 * CJuiDatePicker displays a datepicker.
 *
 * CJuiDatePicker encapsulates the {@link http://jqueryui.com/demos/datepicker/ JUI
 * datepicker} plugin.
 *
 * To use this widget, you may insert the following code in a view:
 * <pre>
 * $this->widget('zii.widgets.jui.CJuiDatePicker', array(
 *     'name'=>'publishDate',
 *     // additional javascript options for the date picker plugin
 *     'options'=>array(
 *         'showAnim'=>'fold',
 *     ),
 *     'htmlOptions'=>array(
 *         'style'=>'height:20px;'
 *     ),
 * ));
 * </pre>
 *
 * By configuring the {@link options} property, you may specify the options
 * that need to be passed to the JUI datepicker plugin. Please refer to
 * the {@link http://jqueryui.com/demos/datepicker/ JUI datepicker} documentation
 * for possible options (name-value pairs).
 *
 * @author Sebastian Thierer <sebathi@gmail.com>
 * @version $Id: CJuiDatePicker.php 3302 2011-06-23 14:36:00Z qiang.xue $
 * @package zii.widgets.jui
 * @since 1.1
 */
class CJuiDatePicker extends CJuiInputWidget
{
    /**
     * @var string the locale ID (eg 'fr', 'de') for the language to be used by the date picker.
     * If this property is not set, I18N will not be involved. That is, the date picker will show in English.
     * You can force English language by setting the language attribute as '' (empty string)
     */
    public $language;

    /**
     * @var string The i18n Jquery UI script file. It uses scriptUrl property as base url.
     */
    public $i18nScriptFile = 'jquery-ui-i18n.min.js';

    /**
     * @var array The default options called just one time per request. This options will alter every other CJuiDatePicker instance in the page.
     * It has to be set at the first call of CJuiDatePicker widget in the request.
     */
    public $defaultOptions;

    /**
     * @var boolean If true, shows the widget as an inline calendar and the input as a hidden field. Use the onSelect event to update the hidden field
     */
    public $flat = false;

    /**
     * Run this widget.
     * This method registers necessary javascript and renders the needed HTML code.
     */
    public function run()
    {

        list($name,$id)=$this->resolveNameID();

        if(isset($this->htmlOptions['id']))
        $id=$this->htmlOptions['id'];
        else
        $this->htmlOptions['id']=$id;
        if(isset($this->htmlOptions['name']))
        $name=$this->htmlOptions['name'];
        else
        $this->htmlOptions['name']=$name;

        if ($this->flat===false)
        {
            if($this->hasModel())
            echo CHtml::activeTextField($this->model,$this->attribute,$this->htmlOptions);
            else
            echo CHtml::textField($name,$this->value,$this->htmlOptions);
        }
        else
        {
            if($this->hasModel())
            {
                echo CHtml::activeHiddenField($this->model,$this->attribute,$this->htmlOptions);
                $attribute = $this->attribute;
                $this->options['defaultDate'] = $this->model->$attribute;
            }
            else
            {
                echo CHtml::hiddenField($name,$this->value,$this->htmlOptions);
                $this->options['defaultDate'] = $this->value;
            }

            if (!isset($this->options['onSelect']))
            $this->options['onSelect']="js:function( selectedDate ) { jQuery('#{$id}').val(selectedDate);}";

            $id = $this->htmlOptions['id'] = $this->htmlOptions['id'].'_container';
            $this->htmlOptions['name'] = $this->htmlOptions['name'].'_container';

            echo CHtml::tag('div', $this->htmlOptions, '');
        }

        $options=CJavaScript::encode($this->options);
        $js = "jQuery('#{$id}').datepicker($options);";

        if ($this->language!='' && $this->language!='en')
        {
            $this->registerScriptFile($this->i18nScriptFile);
            $js = "jQuery('#{$id}').datepicker(jQuery.extend({showMonthAfterYear:false}, jQuery.datepicker.regional['{$this->language}'], {$options}));";
        }

        $cs = Yii::app()->getClientScript();

        if (isset($this->defaultOptions))
        {
            $this->registerScriptFile($this->i18nScriptFile);
            $cs->registerScript(__CLASS__, 	$this->defaultOptions!==null?'jQuery.datepicker.setDefaults('.CJavaScript::encode($this->defaultOptions).');':'');
        }
        $cs->registerScript(__CLASS__.'#'.$id, $js);

    }
}